CN1134857C - Antenna device suitable to mobile radio equipments - Google Patents
Antenna device suitable to mobile radio equipments Download PDFInfo
- Publication number
- CN1134857C CN1134857C CNB981066208A CN98106620A CN1134857C CN 1134857 C CN1134857 C CN 1134857C CN B981066208 A CNB981066208 A CN B981066208A CN 98106620 A CN98106620 A CN 98106620A CN 1134857 C CN1134857 C CN 1134857C
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- CN
- China
- Prior art keywords
- antenna
- helical
- telescopic
- helical antenna
- telescopic antenna
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
- H01Q1/244—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas extendable from a housing along a given path
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Details Of Aerials (AREA)
- Support Of Aerials (AREA)
Abstract
An antenna device is provided that is particularly suitable for mobile radio telephone device. The antenna device has a first helix antenna, a helix antenna connectible to the first helix antenna as well as an extensible rod antenna. In the extended condition of the rod antenna, a connector element connects only the rod antenna to the first helix antenna. In the retracted condition of the rod antenna, the connector element connects only the second helix antenna to the first helix antenna. An antenna device having a low space requirement is thus created. It is simultaneously assured that, regardless of the retracted or extended condition of the rod antenna, an antenna device that is matched to the optimum transmission/reception power is always formed by a combination of two antennas.
Description
Technical field
The present invention relates to a kind of antenna assembly and a kind of mobile wireless device that is specially adapted to vehicular radio.
Background technology
In the vehicular radio, use so-called tuned antenna usually, promptly the effective length of antenna becomes certain ratio with the wavelength X of receive frequency range.In the vehicular radio that meets so-called GSM-standard, the frequency range of reception/emission is approximately 900 to 1000MHz.The corresponding wavelength of frequency range is approximately 30 to 35cm therewith.A kind of effective length is tuned at half the antenna of wavelength of receive frequency range, therefore must meet the GSM-standard its effectively () length be approximately 15 to 18cm.Obviously, for the vehicular radio of portable as far as possible use, length is that 15 to 18cm antenna is a big shortcoming.An antenna that is fixedly mounted on the such length on the vehicular radio is because may be very easily by bending or the injury that fractures and can not using.
So installation has the telescopic antenna of above-mentioned length to vehicular radio usually, or is designed to have the helical antenna (Spiralantenne) of same electrical length or the antenna that spiral combines with pull bar.Before starting working, vehicular radio under the situation of using telescopic antenna, must earlier antenna be drawn back.This method has individual shortcoming, because if the user forgot the elongation antenna before vehicular radio is started working, will reduce the emission/received power of vehicular radio.The shortcoming of independent helical antenna is that reception/emitting performance degenerates.
Summary of the invention
Task of the present invention is to obtain a kind of antenna assembly, and it can have few antenna space requirements and obtain good emission/receiving feature under rounding state.
This task is resolved in conjunction with two known structure principles according to the present invention.The antenna assembly that the present invention is particularly suitable for vehicular radio comprises one first helical antenna, second antenna that can be connected with first helical antenna and a telescopic telescopic antenna.This antenna assembly is to construct like this, and a Connection Element such as a common antenna contact element, makes telescopic antenna under the situation of pulling out, and only telescopic antenna is linked to each other with first helical antenna.Under the situation that telescopic antenna draws in, in contrast, only second helical antenna is linked to each other with first helical antenna by Connection Element.
Solution according to the present invention is to be made of two antennas independent, that can independently assemble each other in principle.
Advantageously first helical antenna, second helical antenna and telescopic antenna all be adjusted at emission/receive frequency range wavelength X 1/4.Each above-mentioned antenna also constitutes a described quarter-wave radiator (λ/4 radiators) separately.By the combination of antenna according to the present invention, always the another one quarter-wave radiator is coupled to first quarter-wave radiator, i.e. first helical antenna.Under the situation that telescopic antenna is pulled out, telescopic antenna is coupled to first helical antenna as quarter-wave radiator, and on the contrary, under the situation that telescopic antenna draws in, second helical antenna is coupled to first helical antenna.Therefore, no matter be rounding state at telescopic antenna, still all constitute a λ/2 radiators jointly at the state of pulling out, this tuning of reception/transmitting power for this antenna assembly necessity is favourable.
Advantageously telescopic antenna is in its zone, and this zone is to be made of non-conducting material being positioned under the situation that telescopic antenna draws near the helical antenna.Guarantee that thus under the telescopic antenna rounding state, just second helical antenna is coupled to first helical antenna, the field of first and second helical antennas, the influence of tension member antenna hardly.
First helical antenna preferentially is a coil on printed circuit board (PCB).
If telescopic antenna is coaxial with helical antenna, space requirement is just few especially.If the parallel skew a little again with second helical antenna of first helical antenna is just very suitable in this respect.
The present invention has also designed the vehicular radio of the antenna assembly with aforesaid way.If second helical antenna is placed in the shape of tail annex of shell of vehicular radio, to space requirement at this advantageous particularly.
According to an aspect of the present invention, provide a kind of antenna assembly that is used for mobile radiotelephone equipment, have a telescopic antenna that can draw back, have a free end that can draw back and be opposite to a described free-ended end opposite; One first helical antenna, first helical antenna is in the described end opposite of described telescopic antenna when described telescopic antenna draws back; Second helical antenna that can link to each other with first helical antenna; With a Connection Element, this element only links to each other telescopic antenna under the situation that telescopic antenna draws back with first helical antenna, and under the situation that telescopic antenna draws in, only second helical antenna is linked to each other with first helical antenna.
According to a further aspect in the invention, provide a kind of mobile radiotelephone equipment, it has: a shell; The telescopic antenna that can draw back, having one can draw back and draw in free end at described shell from described shell, and has with respect to a described free-ended end opposite; One first helical antenna, first helical antenna is in the described end opposite of described telescopic antenna when described telescopic antenna draws back; Second helical antenna that can link to each other with first helical antenna; With a Connection Element, this element only links to each other telescopic antenna under the situation that telescopic antenna draws back with first helical antenna, and under the situation that telescopic antenna draws in, only second helical antenna is linked to each other with first helical antenna.
Description of drawings
The present invention by the following description of the embodiments and clearer to the description meeting of accompanying drawing, as shown in the figure:
Fig. 1 based on of the present invention, draw back under the state antenna assembly and
The antenna assembly of Fig. 2 Fig. 1 under rounding state.
Embodiment
Fig. 1 show a kind of based on of the present invention, be installed in the antenna assembly in the vehicular radio, draw back at this telescopic antenna.
In Fig. 1, can see a kind of vehicular radio 6 with shell 9.This vehicular radio 6 is such as the mobile phone (mobile phone Handy) that is a so-called GSM-standard.Transmit in 900 to 1000MHz frequency range by the GSM-standard information.Can also see a kind of antenna assembly among the figure, it is made of the helical antenna in the shell that is installed in mobile wireless device 691,7, one second helical antennas 2 of Connection Element (antenna contact element) and a telescopic antenna 3.The residing state of antenna assembly shown in Figure 1: telescopic antenna is pulled out outside the shell 9 of vehicular radio 6.The residing state of antenna assembly shown in Figure 2: telescopic antenna inserts in the shell 9 of vehicular radio 6.In Fig. 1, also show printed circuit board (PCB) 4, carrying the treatment circuit of the vehicular radio 6 that does not illustrate such as it.In the illustrated embodiment, first helical antenna 1, second helical antenna 2 and telescopic antenna 3 all have effective length separately, are 1/4 of the wavelength X of reception/transmit frequency range.1/4 of the wavelength X of reception/transmit frequency range is 7-9cm in the GSM-standard.The size of individual antenna also is so, and it does not hinder integrated in portable vehicular radio 6.Therefore first helical antenna 1, second helical antenna 2 and telescopic antenna 3 constitute so-called quarter-wave radiator or λ/4 radiators separately.
In Fig. 1, represent contact element with 7 calcspars that indicate.The internal structure of contact element 7 does not clearly illustrate in the drawings.Realize contact element 7 like this according to the present invention: under the situation outside the shell 9 that illustrates in the drawings, pull out mobile wireless device 6 at telescopic antenna 3, have only first helical antenna 1 in the shell 9 of telescopic antenna 3 and mobile wireless device 6 to link to each other.Therefore under the state that telescopic antenna 3 draws back, first helical antenna 1 and telescopic antenna 3 constitute so-called λ/2 radiators jointly.If telescopic antenna 3 does not have maybe may not have to pull out in the complete shell 9 by vehicular radio 6, contact device 7 no longer links together telescopic antenna 3 and first helical antenna of installing in the enclosure 1 in contrast.No longer be connected as long as contact device 7 makes between first helical antenna 1 of telescopic antenna 3 and installation in the shell 9 of vehicular radio 6, just make to form between second helical antenna 2 and first helical antenna 1 to be connected.Under the situation of in telescopic antenna 3 does not have or do not have complete shell 9 by vehicular radio 6, pulling out, have only second helical antenna 2 to link to each other with first helical antenna 1.Therefore in this case, first helical antenna 1 and second helical antenna, 2 common formation λ/2 radiators.Contact device 7 also guarantees according to the present invention, and is irrelevant with the state of telescopic antenna 3, has an other quarter-wave radiator to be connected to first helical antenna 1 all the time, and the latter constitutes a quarter-wave radiator equally.If particularly the user has forgotten telescopic antenna 3 is pulled out fully, guarantee to provide enough emission/received powers by antenna assembly of the present invention in the shell 9 of vehicular radio 6.Need explanation, in the schematic diagram of Fig. 1 and 2, can not see clearly the function of contact element 7 as mentioned above fully.
First helical antenna 1 can constitute by the coil above the printed circuit board (PCB) 4.Space but also the suitable solution of expense had not only very been saved so obtain one.Selecting first helical antenna 1 to can be used as hard-wired helical element as another kind implements.In this case, as shown in the figure, load onto an aerial network adapter 8 for first helical antenna 1, it is tuned to λ/2 radiators (half-wave element) in contact device 7 relative sides.By this aerial network adapter 8 the treatment circuit (not shown) of the vehicular radio 6 of design on first helical antenna 1 and the printed circuit board (PCB) 4 is linked up.First helical antenna 1 can be installed on the aerial network adapter 8 three-dimensionally.Because the present invention does not relate to the internal structure of aerial network adapter 8, only represent with calcspar in the drawings.
Therefore always can guarantee according to the present invention that the state that draws back or draw in telescopic antenna 3 is irrelevant all to constitute a λ/2 radiators, and the emission/received power of antenna assembly the best is provided.Telescopic antenna 3 makes second helical antenna 2 invalid when drawing back state, then under any circumstance have only a quarter-wave radiator to be connected to first quarter-wave radiator, i.e. first helical antenna 1.
Telescopic antenna 3 is made of top 5 and bottom 10 as shown in the figure.Telescopic antenna 3 shared scopes can be understood as top 5, this scope be positioned under the situation that telescopic antenna 3 draws in two helical antennas 1,2 near.Be the top 5 of telescopic antenna 3 is extended to telescopic antenna 3 basically by the upper extreme point 12 of telescopic antenna 3 transition point 13, under the situation that telescopic antenna 3 draws in (Fig. 2) it be positioned at network adapter 8 the opposite or below.The top 5 of telescopic antenna 3 preferentially is made of non-conducting material.Can guarantee thus, the field of first helical antenna 1 and second helical antenna 2, under the situation that telescopic antenna 3 draws in, a tension member antenna 3 seldom influence, promptly helical antenna 1,2 not because of telescopic antenna 3 by dynamic deformation.The electrical length of telescopic antenna 3 is by the lower extreme point 14 of telescopic antenna 3 length to transition point 13 in this case.The top 5 of telescopic antenna 3 especially has such function, and telescopic antenna 3 can insert in this way, promptly the conductive region of telescopic antenna 3 under the situation that its draws in (Fig. 2) not near helical antenna 1,2.Top 5 can be regarded insertion-prolongation as.
As shown in the figure, if second helical antenna 2 is installed, then be particularly suitable for the portable structure of antenna assembly in the shape of tail annex 11 of the shell 9 of vehicular radio 6.So telescopic antenna 3 just can coaxial-type be installed in second helical antenna 2 insertedly.First helical antenna 1 of An Zhuaning in the enclosure, shown in resembling, with the axle of second helical antenna 2 parallel and a little skew to install be favourable.
If in an illustrated embodiment effective electrical length of first helical antenna 1, second helical antenna 2 and telescopic antenna 3 be receive frequency range wavelength X 1/4, really also need explanation, the division of above-mentioned antenna electrical length is arbitrarily, as long as the summation of antenna electrical length is desired total length, preferentially be half of wavelength X of receive frequency range.
Certainly be noted that in the case the electrical length of second helical antenna 2 equates with the electrical length of telescopic antenna 3, could guarantee only so, under any circumstance, promptly with a kind of tuning antenna assembly of the irrelevant formation of the state of telescopic antenna 3.
The reference symbol table
1: the first helical antenna
2: the second helical antennas
3: telescopic antenna
4: printed circuit board (PCB)
5: the top of telescopic antenna (3)
6: vehicular radio
7: connect (contact) element
8: network adapter
9: the shell of vehicular radio (6)
10: the bottom of telescopic antenna (3)
11: the shape of tail annex of shell (9)
12: the upper extreme point of telescopic antenna (3)
13: the top (5) of telescopic antenna (3) and the breakover point between bottom (10)
14: the lower extreme point of telescopic antenna (3)
Claims (8)
1. an antenna assembly that is used for mobile radiotelephone equipment has
-one telescopic antenna that can draw back has a free end that can draw back and is opposite to a described free-ended end opposite;
-one first helical antenna, first helical antenna is in the described end opposite of described telescopic antenna when described telescopic antenna draws back;
-one second helical antenna that can link to each other with first helical antenna; With
-one Connection Element, this element only link to each other telescopic antenna under the situation that telescopic antenna draws back with first helical antenna, and under the situation that telescopic antenna draws in, only second helical antenna are linked to each other with first helical antenna.
2. according to the antenna assembly of claim 1, it is characterized in that,
First helical antenna, second helical antenna and the telescopic antenna that can draw back be tuned at respectively separately to be launched/receive frequency range wavelength 1/4th.
3. according to the antenna assembly of claim 1,
It is characterized in that,
Telescopic antenna is under the situation that its draws in, and near the zone being positioned at first and second helical antennas is made of electrically non-conductive material.
4. according to the antenna assembly of claim 1,
It is characterized in that,
First helical antenna is the coil above the printed circuit board (PCB).
5. require 1 antenna assembly according to aforesaid right,
It is characterized in that,
Telescopic antenna is co-axially mounted on second helical antenna.
6. according to the antenna assembly that requires 1 according to aforesaid right,
It is characterized in that,
First helical antenna is parallel to and is offset the second helical antenna ground to be installed.
7. mobile radiotelephone equipment, it has:
-one shell;
-one telescopic antenna that can draw back, having one can draw back and draw in free end at described shell from described shell, and has with respect to a described free-ended end opposite;
-one first helical antenna, first helical antenna is in the described end opposite of described telescopic antenna when described telescopic antenna draws back;
-one second helical antenna that can link to each other with first helical antenna; With
A Connection Element, this element only link to each other telescopic antenna under the situation that telescopic antenna draws back with first helical antenna, and under the situation that telescopic antenna draws in, only second helical antenna are linked to each other with first helical antenna.
8. according to the mobile radiotelephone equipment of claim 7,
It is characterized in that,
Described shell has a shape of tail annex, and second helical antenna is placed in the shape of tail annex of described shell.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19715726.2 | 1997-04-15 | ||
| DE19715726A DE19715726C2 (en) | 1997-04-15 | 1997-04-15 | Antenna device for mobile radio devices |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1201273A CN1201273A (en) | 1998-12-09 |
| CN1134857C true CN1134857C (en) | 2004-01-14 |
Family
ID=7826583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB981066208A Expired - Fee Related CN1134857C (en) | 1997-04-15 | 1998-04-15 | Antenna device suitable to mobile radio equipments |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US6212400B1 (en) |
| CN (1) | CN1134857C (en) |
| DE (1) | DE19715726C2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI102434B (en) * | 1996-08-22 | 1998-11-30 | Filtronic Lk Oy | dual-frequency, |
| WO2000060697A1 (en) * | 1999-04-06 | 2000-10-12 | Mitsubishi Denki Kabushiki Kaisha | Method of manufacturing cellular radio device and case |
| EP1329980A4 (en) * | 2000-09-26 | 2004-04-28 | Matsushita Electric Ind Co Ltd | Portable radio apparatus antenna |
| US6788260B2 (en) * | 2002-12-18 | 2004-09-07 | Centurion Wireless Technologies, Inc. | Antenna with cap |
| US7592958B2 (en) * | 2003-10-22 | 2009-09-22 | Sony Ericsson Mobile Communications, Ab | Multi-band antennas and radio apparatus incorporating the same |
| US20060154708A1 (en) * | 2005-01-13 | 2006-07-13 | Brehn Corporation | Personal portable external cell phone antenna |
| JP2009147556A (en) * | 2007-12-12 | 2009-07-02 | Sony Corp | Antenna, communication device, and method for manufacturing antenna |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE500331C2 (en) * | 1993-05-24 | 1994-06-06 | Allgon Ab | Antenna device for portable communication equipment |
| JP3463704B2 (en) * | 1994-09-06 | 2003-11-05 | ソニー株式会社 | Telescopic antenna device |
| US5504494A (en) * | 1994-11-25 | 1996-04-02 | Motorola, Inc. | Multi-stage antenna |
| GB2296603B (en) * | 1994-12-23 | 1999-02-17 | Nokia Mobile Phones Ltd | Retractable top load antenna |
| KR100194422B1 (en) * | 1995-04-27 | 1999-06-15 | 김광호 | Antenna connection device of portable wireless device |
| FI98165C (en) * | 1995-06-05 | 1997-04-25 | Lk Products Oy | Dual function antenna |
| US5963871A (en) * | 1996-10-04 | 1999-10-05 | Telefonaktiebolaget Lm Ericsson | Retractable multi-band antennas |
| US5907306A (en) * | 1996-12-30 | 1999-05-25 | Ericsson Inc. | Retractable radiotelephone antennas and associated radiotelephone communication methods |
| SE518575C2 (en) * | 1997-03-24 | 2002-10-22 | Ericsson Telefon Ab L M | Sliding antenna with alternating electrical length |
-
1997
- 1997-04-15 DE DE19715726A patent/DE19715726C2/en not_active Expired - Fee Related
-
1998
- 1998-04-15 US US09/060,807 patent/US6212400B1/en not_active Expired - Lifetime
- 1998-04-15 CN CNB981066208A patent/CN1134857C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US6212400B1 (en) | 2001-04-03 |
| DE19715726C2 (en) | 2001-08-30 |
| CN1201273A (en) | 1998-12-09 |
| DE19715726A1 (en) | 1998-10-29 |
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Legal Events
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |